app.py

import streamlit as st
from PIL import Image
import imageio.v3 as iio
from inference import inference
from src.utils.opt import Opts
import os

st.set_page_config(layout='wide')

st.markdown(
    """
    <style>
        div[data-testid="column"]:nth-of-type(1)
        {

        } 

        div[data-testid="column"]:nth-of-type(2)
        {
            
        } 
    </style>
    """,unsafe_allow_html=True
)

col1, col2, col3 = st.columns(3)

if 'counter' not in st.session_state:
    st.session_state.video_path = None
    st.session_state.image = None
    st.session_state.counter = 0

def showVideo(image):
    if st.session_state.image is not None:
        cfg = Opts(cfg="configs/style_inference.yml").parse_args()
        result = inference(cfg, "render_test", image=image)
        st.session_state.video_path = result["video_path"]
        st.session_state.counter += 1
    else:
        col2.write("No uploaded image")

with col1:
    col1.subheader("Source multiview images")
    filteredImages = []
    for image_file in os.listdir('data/nerf_llff_data/trex/streamlit_images'):
        filteredImages.append(Image.open(os.path.join('data/nerf_llff_data/trex/streamlit_images', image_file)))
    id = 0
    for img in range(0, len(filteredImages), 4):
        cols = col1.columns(4)
        cols[0].image(filteredImages[id], use_column_width=True)
        id +=1
        cols[1].image(filteredImages[id], use_column_width=True)
        id +=1
        cols[2].image(filteredImages[id], use_column_width=True)
        id +=1
        cols[3].image(filteredImages[id], use_column_width=True)
        id +=1


with col2:
    col2.subheader("Style image")
    uploaded_file = col2.file_uploader("Choose a image file")
    if uploaded_file:
        st.session_state.image = Image.open(uploaded_file)
        img = col2.image(st.session_state.image, caption='Style Image', use_column_width=True)
    col2.button('Run Style Transfer', on_click=showVideo, args=([st.session_state.image]))


col3.subheader("Style videos")
if st.session_state.counter > 0:
    video_file = open(st.session_state.video_path, 'rb')
    video_bytes = video_file.read()
    col3.video(video_bytes)